{"id":33910,"date":"2023-02-15T15:16:41","date_gmt":"2023-02-15T09:46:41","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/"},"modified":"2023-02-15T15:16:41","modified_gmt":"2023-02-15T09:46:41","slug":"solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/","title":{"rendered":"[Solved] Merge multiple list of dict with same value in common key [closed]"},"content":{"rendered":"

[ad_1]
\n<\/p>\n

\n
\n
<\/div>\n
\n
\n

If you want a more pythonic way:<\/p>\n

from itertools import groupby\nfrom pprint import pprint\nfrom collections import ChainMap\n\na = [{'a':0,'b':23}, {'a':3,'b':77}, {'a':1,'b':99}]\nb = [{'a':1,'c':666}, {'a':4,'c':546}]\nc = [{'d':33,'a':3}, {'d':1111,'a':4}, {'d':76,'a':1}, {'d':775,'a':0}]\nd = [{'a':2,'e':12}, {'a':4,'e':76}]\n\ndict_list = a + b + c + d\n\n# You just need to specify the key you want to use in the lambda function\n# There's no need to declare the different key values previously\nres = map(lambda dict_tuple: dict(ChainMap(*dict_tuple[1])),\n          groupby(sorted(dict_list,\n                         key=lambda sub_dict: sub_dict[\"a\"]),\n                  key=lambda sub_dict: sub_dict[\"a\"]))\n\npprint(list(res))\n<\/code><\/pre>\n
Outputs:<\/p>\n
[{'a': 0, 'b': 23, 'd': 775},\n {'a': 1, 'b': 99, 'c': 666, 'd': 76},\n {'a': 2, 'e': 12},\n {'a': 3, 'b': 77, 'd': 33},\n {'a': 4, 'c': 546, 'd': 1111, 'e': 76}]\n<\/code><\/pre>\n
Edit (Improvement):<\/p>\n
You can also use<\/p>\n
from _operator import itemgetter\nkey=itemgetter(\"a\")\n<\/code><\/pre>\n
instead of<\/p>\n
key=lambda sub_dict: sub_dict[\"a\"]\n<\/code><\/pre>\n
The version with itemgetter is much faster. Using the example you provided:<\/p>\n
- Lambda: 0.037109375ms\n- Itemgetter: 0.009033203125ms\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            1<\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Merge multiple list of dict with same value in common key [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] If you want a more pythonic way: from itertools import groupby from pprint import pprint from collections import ChainMap a = [{‘a’:0,’b’:23}, {‘a’:3,’b’:77}, {‘a’:1,’b’:99}] b = [{‘a’:1,’c’:666}, {‘a’:4,’c’:546}] c = [{‘d’:33,’a’:3}, {‘d’:1111,’a’:4}, {‘d’:76,’a’:1}, {‘d’:775,’a’:0}] d = [{‘a’:2,’e’:12}, {‘a’:4,’e’:76}] dict_list = a + b + c + d # You just need to specify the … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[834,349],"class_list":["post-33910","post","type-post","status-publish","format-standard","hentry","category-solved","tag-dictionary","tag-python"],"yoast_head":"\n[Solved] Merge multiple list of dict with same value in common key [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Merge multiple list of dict with same value in common key [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] If you want a more pythonic way: from itertools import groupby from pprint import pprint from collections import ChainMap a = [{'a':0,'b':23}, {'a':3,'b':77}, {'a':1,'b':99}] b = [{'a':1,'c':666}, {'a':4,'c':546}] c = [{'d':33,'a':3}, {'d':1111,'a':4}, {'d':76,'a':1}, {'d':775,'a':0}] d = [{'a':2,'e':12}, {'a':4,'e':76}] dict_list = a + b + c + d # You just need to specify the ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2023-02-15T09:46:41+00:00\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] Merge multiple list of dict with same value in common key [closed]\",\"datePublished\":\"2023-02-15T09:46:41+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/\"},\"wordCount\":56,\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"keywords\":[\"dictionary\",\"python\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/\",\"url\":\"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/\",\"name\":\"[Solved] Merge multiple list of dict with same value in common key [closed] - 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JassWeb","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/","og_locale":"en_US","og_type":"article","og_title":"[Solved] Merge multiple list of dict with same value in common key [closed] - JassWeb","og_description":"[ad_1] If you want a more pythonic way: from itertools import groupby from pprint import pprint from collections import ChainMap a = [{'a':0,'b':23}, {'a':3,'b':77}, {'a':1,'b':99}] b = [{'a':1,'c':666}, {'a':4,'c':546}] c = [{'d':33,'a':3}, {'d':1111,'a':4}, {'d':76,'a':1}, {'d':775,'a':0}] d = [{'a':2,'e':12}, {'a':4,'e':76}] dict_list = a + b + c + d # You just need to specify the ... Read more","og_url":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/","og_site_name":"JassWeb","article_published_time":"2023-02-15T09:46:41+00:00","author":"Kirat","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Kirat","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/#article","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/"},"author":{"name":"Kirat","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31"},"headline":"[Solved] Merge multiple list of dict with same value in common key [closed]","datePublished":"2023-02-15T09:46:41+00:00","mainEntityOfPage":{"@id":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/"},"wordCount":56,"publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"keywords":["dictionary","python"],"articleSection":["Solved"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/","url":"https:\/\/jassweb.com\/solved\/solved-merge-multiple-list-of-dict-with-same-value-in-common-key-closed\/","name":"[Solved] Merge multiple list of dict with same value in common key [closed] - 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